Question

我正在使用paypal快速结账，我正试图获取用户决定结账时购物车中的总价值。我的运费将取决于总价格，虽然我的Paypal帐户设置中填写了运费计算，但运费不会显示在结帐屏幕上。如何在结账时抓住购物车的总价格，以便我可以增加运费？到目前为止我所拥有的仅仅是用户签出后的值，并将它们返回到我的网站，但此时添加送货已为时已晚。

Dim authToken As String = "sdf5414FdsfDFS5eEF52s336DFLLJUhhbuzek64"
    Dim txToken As String = Request.QueryString("tx")
    txToken = "4GGSES84eEWSS" 
    Dim strRequest As String = "cmd=_notify-synch&tx=" & txToken & "&at=" & authToken

    'Dim Payerinfo As New PayerInfo
    'Dim trans As New Transaction
    'Dim tra As New PayPal.PayPalAPIInterfaceService.Model.GetTransactionDetailsReq




    'post back to either sandbox or live
    Dim strSandbox As String = "https://www.sandbox.paypal.com/cgi-bin/webscr"
    Dim strLive As String = "https://www.paypal.com/cgi-bin/webscr"
    Dim req As HttpWebRequest = CType(WebRequest.Create(strSandbox), HttpWebRequest)
    'req.Headers = valHeader
    'Set values for the request back
    req.Method = "POST"
    req.ContentType = "application/x-www-form-urlencoded"
    req.ContentLength = strRequest.Length

    'Send the request to PayPal and get the response
    Dim streamOut As StreamWriter = New StreamWriter(req.GetRequestStream(), Encoding.ASCII)
    streamOut.Write(strRequest)
    streamOut.Close()
    Dim streamIn As StreamReader = New StreamReader(req.GetResponse().GetResponseStream())
    Dim strResponse As String = streamIn.ReadToEnd()
    streamIn.Close()

    If Not String.IsNullOrEmpty(strResponse) Then

        Dim results As New Dictionary(Of String, String)
        Dim reader As New StringReader(strResponse)
        Dim line As String = reader.ReadLine()
        If line = "SUCCESS" Then
            'FormView1.Visible = False
            While True
                Dim aLine As String
                aLine = reader.ReadLine
                If aLine IsNot Nothing Then
                    Dim strArr() As String
                    strArr = aLine.Split("=")
                    results.Add(strArr(0), strArr(1))
                Else
                    Exit While
                End If
            End While

            ' Displays all the keys for results, helps to see what the keys are named for writing to text file

            For Each kvp As KeyValuePair(Of String, String) In results
                Dim v1 As String = kvp.Key
                Dim v2 As String = kvp.Value
                Response.Write(v1.ToString _
                        + ":  " + v2 + "<br /> ")
            Next

        End If

我也一直试图声明一个会话变量并在每次点击添加到购物车按钮时添加它但我看到了一个问题，因为我不知道这些项目将保留在paypal购物车和如果会话变量会话耗尽时间并被清除，他们将收到免费送货，因为运费金额已清除。他们有什么方法可以做到这一点吗？

Protected Sub AddToCartBtn_Click(sender As Object, e As EventArgs)
Session("CartAmount")     

 Dim itemNumber As String = str2
    Dim itemAmount As String = price
    Dim currencyCode As String = "USD"
    Dim addItem As Integer = 1

    Dim ppHref As StringBuilder = New StringBuilder()
    ppHref.Append("https://www.sandbox.paypal.com/cgi-bin/webscr?cmd=_cart")
    ppHref.Append("&business=" + business)
    ppHref.Append("&item_name=" + itemName)
    ppHref.Append("&item_number=" + itemNumber)
    ppHref.Append("&amount=" + itemAmount)
    ppHref.Append("&currency_code=" + currencyCode)   
Session("CartAmount") = (cartTotal + Session("CartAmount"))
End Sub

Answer 1

您可以通过以下网址引用在提供的变量中传递购物车价值， https://developer.paypal.com/docs/classic/paypal-payments-standard/integration-guide/Appx_websitestandard_htmlvariables/#id08A6HF080O3

在结账前获取Paypal Express购物车价格

1 个答案: